The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 03, 2000
Filed:
Mar. 17, 1998
Heather Elizabeth Bonett, Hull, GB;
Reckitt & Colman Products Limited, London, GB;
Abstract
A process for bleaching and/or providing limescale removal at a surface, by applying to that surface an aqueous composition having a pH of 2 or less and comprises a mixture of (a) an aqueous composition comprising hydrogen peroxide or an organic peracid having a pH of greater than 2 but less than 7 and (b) an acidic composition wherein components (a) and (b) are mixed not more than two hours before being applied to the surface requiring bleaching and/or limescale removal. The organic acid of component (a) has the formula XC (O)OOH where X is hydrogen or CH.sub.3 (CH.sub.2).sub.n and n is 0 to 8. The acid composition (b) comprises hydrochloric, sulphamic, tartaric, phosphoric, oxalic, citric, salicylic or ascorbic acids.